List of champions for factoring Cunningham numbers:

Quadratic sieve method:
3563	C116	3,329+	A. K. Lenstra & M. Manasse & al. with many computers
3138	C116	10,142+	A. K. Lenstra & M. Manasse & al. with many computers

Special number field sieve:
3662	C162	12,151-	FactOregon/CWI
3409	C158	2,523-	A. K. Lenstra & D. Bernstein with two MasPars

General number field sieve:
3787	C107	6,223+	M. Huizing (CWI)
3663	C105	3,367-	FactOregon/CWI

Elliptic curve method:
3644	P42	2,603-	S. S. Wagstaff, Jr with a MasPar
3335	P42	10,201-	D. Rusin with a SparcStation

Largest penultimate prime factor (ultimate factor shown also):
3409	p69*p90  2,523-    A. K. Lenstra & D. Bernstein with two MasPars
3590	p68*p69	 6,178+	   R. Silverman with several computers

	First five holes in each table on May 9, 1995:

2,527-	c145	2,559-	c142	2,563-	c146	2,565-	c115	2,569-	c128
2,521+	c140	2,569+	c144	2,587+	c151	2,589+	c150	2,611+	c123
2,934L	c133	2,962M	c116	2,974L	c144	2,982L	c108	2,982M	c113
2,524+	c119	2,536+	c156	2,556+	c134	2,568+	c120	2,592+	c174

3,331-	c139	3,349-	c167	3,365-	c111	3,371-	c118	3,373-	c178
3,313+	c129	3,316+	c127	3,317+	c151	3,332+	c157	3,344+	c144

5,233-	c148	5,247-	c147	5,253-	c143	5,505M	c109	5,515M	c121
5,223+	c129	5,226+	c157	5,239+	c147	5,242+	c150	5,248+	c156

6,199-	c122	6,209-	c111	6,211-	c108	6,221-	c139	6,227-	c150
6,206+	c146	6,209+	c130	6,218+	c130	6,224+	c137	6,226+	c148

7,187-	c121	7,193-	c109	7,199-	c132	7,205-	c136	7,211-	c173
7,181+	c114	7,188+	c150	7,191+	c152	7,193+	c139	7,194+	c116

10,163-	c138	10,167-	c142	10,169-	c152	10,173-	c154	10,187-	c152
10,158+	c120	10,163+	c139	10,166+	c164	10,167+	c118	10,169+	c145

11,151-	c139	11,167-	c128	11,169-	c151	11,181-	c177	11,187-	c143
11,142+	c141	11,146+	c132	11,148+	c147	11,149+	c145	11,151+	c139

12,137-	c123	12,139-	c119	12,149-	c156	12,161-	c135	12,163-	c120
12,148+	c156	12,151+	c128	12,155+	c111	12,157+	c106	12,163+	c132

Here is the list of smaller but needed numbers:

2,597+	c104	P. Montgomery # 3750
7,203-	c104	S. Wagstaff # 3789
11,177-	c104	P. Leyland # 3752
11,275M	c105	P. Montgomery # 3747